This is the knowledge (Sharee'ah) with which Allaah honoured His Messenger ; He taught it to him so that he might teach it to mankind: "Indeed, Allaah conferred a great favour on the believers when He sent among them a Messenger (Muhammad) from among themselves, reciting unto them His Verses (the Quran), and purifying them (from sins by their following him), and instructing them (in) the Book (the Quran) and Al-Hikmah [the wisdom and the Sunnah of the Prophet (i.e. his legal ways, statements and acts of worship)], while before that they had been in manifest error" [Quran, 3:164]

Kathrine321 wrote: and purifying them (from sins by their following him)

mohammed doesnt purify ANYTHING??? if sins were purified by mohammed then the quran wouldnt say "if your scale has more good deeds you can enter heaven' (paraphrased)
Christ on the other hand cleanses all of our sins by his death .